The liberal advocacy group Media Matters for America this week released two batches of recordings Fox News Channel host Tucker Carlson made as a guest on a radio show where he made denigrating remarks about race and gender. It was timed to coincide with Fox’s first-ever sales meeting with advertisers on Wednesday. Media Matters says it wants to pressure Fox into better behavior by making advertisers aware of what is being said on the air. Carlson says critics want to shut Fox down.

Tucker Carlson says he has the full support of his employer, Fox News, even as the progressive advocacy group Media Matters for America on Monday spotlighted a new trove of offensive remarks he made on years-ago radio shows.

Some advertisers say they are leaving conservative host Tucker Carlson’s show following his remarks referring to immigrants as “the world’s poor.” It’s the latest example of sponsors leaving a Fox News Channel show after controversy, but experts say the flap is likely to blow over.